I also think While the emissions of the world’s middle classes are expected to fall sharply over the next decade, thanks to the general decarbonisation of our economies, the amount produced by the richest will scarcely decline at all is voodoo. Because... I doubt I believe their methodology. They don't make it easy to find it, either; but I waded through it before. And we end up with We assume, based on numerous studies at national, regional and global levels, that emissions rise in proportion to income, above a minimum emissions floor and to a maximum emissions ceiling. "In proportion" (in their terms, elasticity = 1) doesn't seem too plausible to me; but I now realise I need to find their "ceiling" number... rootles around... aha, here: 300 tCO2/person/y; about 15 times the average USAnian. I notice that M says The richest 1% of the world’s people (those earning more than $172,000 a year) produce 15% of the world’s carbon emissions: twice the combined impact of the poorest 50%. On average, they emit over 70 tonnes of carbon dioxide per person every year, and he is semi-quoting the report here, but he is wrong: the 172k figure comes from "Annual income in 2030 ($2011PPP) of richest 1%: >$172k" and 2030 is not now1. The 70 figures is also 2030; the figure for now is ~73. But my point is then that the 300 number leaves a lot of headroom in the 1%, if the average is ~70. And if the economy decarbonises for the NMCPLH, it will likely decarbonise for the NM too.
Is this (I mean M, not me, obvs) anything but noise: does he really expect to be read and influence people? Or is it just filler for the Graun?
1. According to a crappy WAPO calculator, which was the best I could find, income of ~$80k/y puts you in the top 1%. Or did, in 2018. Which puts me in the global top 1%. But not close to the UK top 1%.